/* | |
FreeRTOS V7.4.0 - Copyright (C) 2013 Real Time Engineers Ltd. | |
FEATURES AND PORTS ARE ADDED TO FREERTOS ALL THE TIME. PLEASE VISIT | |
http://www.FreeRTOS.org TO ENSURE YOU ARE USING THE LATEST VERSION. | |
*************************************************************************** | |
* * | |
* FreeRTOS tutorial books are available in pdf and paperback. * | |
* Complete, revised, and edited pdf reference manuals are also * | |
* available. * | |
* * | |
* Purchasing FreeRTOS documentation will not only help you, by * | |
* ensuring you get running as quickly as possible and with an * | |
* in-depth knowledge of how to use FreeRTOS, it will also help * | |
* the FreeRTOS project to continue with its mission of providing * | |
* professional grade, cross platform, de facto standard solutions * | |
* for microcontrollers - completely free of charge! * | |
* * | |
* >>> See http://www.FreeRTOS.org/Documentation for details. <<< * | |
* * | |
* Thank you for using FreeRTOS, and thank you for your support! * | |
* * | |
*************************************************************************** | |
This file is part of the FreeRTOS distribution. | |
FreeRTOS is free software; you can redistribute it and/or modify it under | |
the terms of the GNU General Public License (version 2) as published by the | |
Free Software Foundation AND MODIFIED BY the FreeRTOS exception. | |
>>>>>>NOTE<<<<<< The modification to the GPL is included to allow you to | |
distribute a combined work that includes FreeRTOS without being obliged to | |
provide the source code for proprietary components outside of the FreeRTOS | |
kernel. | |
FreeRTOS is distributed in the hope that it will be useful, but WITHOUT ANY | |
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS | |
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more | |
details. You should have received a copy of the GNU General Public License | |
and the FreeRTOS license exception along with FreeRTOS; if not itcan be | |
viewed here: http://www.freertos.org/a00114.html and also obtained by | |
writing to Real Time Engineers Ltd., contact details for whom are available | |
on the FreeRTOS WEB site. | |
1 tab == 4 spaces! | |
*************************************************************************** | |
* * | |
* Having a problem? Start by reading the FAQ "My application does * | |
* not run, what could be wrong?" * | |
* * | |
* http://www.FreeRTOS.org/FAQHelp.html * | |
* * | |
*************************************************************************** | |
http://www.FreeRTOS.org - Documentation, books, training, latest versions, | |
license and Real Time Engineers Ltd. contact details. | |
http://www.FreeRTOS.org/plus - A selection of FreeRTOS ecosystem products, | |
including FreeRTOS+Trace - an indispensable productivity tool, and our new | |
fully thread aware and reentrant UDP/IP stack. | |
http://www.OpenRTOS.com - Real Time Engineers ltd license FreeRTOS to High | |
Integrity Systems, who sell the code with commercial support, | |
indemnification and middleware, under the OpenRTOS brand. | |
http://www.SafeRTOS.com - High Integrity Systems also provide a safety | |
engineered and independently SIL3 certified version for use in safety and | |
mission critical applications that require provable dependability. | |
*/ | |
#include "FreeRTOS.h" | |
#include "task.h" | |
#include "semphr.h" | |
/* lwIP core includes */ | |
#include "lwip/opt.h" | |
#include "lwip/tcpip.h" | |
/* applications includes */ | |
#include "apps/httpserver_raw_from_lwIP_download/httpd.h" | |
/* include the port-dependent configuration */ | |
#include "lwipcfg_msvc.h" | |
/* Dimensions the cTxBuffer array - which is itself used to hold replies from | |
command line commands. cTxBuffer is a shared buffer, so protected by the | |
xTxBufferMutex mutex. */ | |
#define lwipappsTX_BUFFER_SIZE 1024 | |
/* The maximum time to block waiting to obtain the xTxBufferMutex to become | |
available. */ | |
#define lwipappsMAX_TIME_TO_WAIT_FOR_TX_BUFFER_MS ( 100 / portTICK_PERIOD_MS ) | |
/* Definitions of the various SSI callback functions within the pccSSITags | |
array. If pccSSITags is updated, then these definitions must also be updated. */ | |
#define ssiTASK_STATS_INDEX 0 | |
#define ssiRUN_TIME_STATS_INDEX 1 | |
/*-----------------------------------------------------------*/ | |
/* | |
* The function that implements the lwIP based sockets command interpreter | |
* server. | |
*/ | |
extern void vBasicSocketsCommandInterpreterTask( void *pvParameters ); | |
/* | |
* The SSI handler callback function passed to lwIP. | |
*/ | |
static unsigned short uslwIPAppsSSIHandler( int iIndex, char *pcBuffer, int iBufferLength ); | |
/*-----------------------------------------------------------*/ | |
/* The SSI strings that are embedded in the served html files. If this array | |
is changed, then the index position defined by the #defines such as | |
ssiTASK_STATS_INDEX above must also be updated. */ | |
static const char *pccSSITags[] = | |
{ | |
"rtos_stats", | |
"run_stats" | |
}; | |
/* Semaphore used to guard the Tx buffer. */ | |
static SemaphoreHandle_t xTxBufferMutex = NULL; | |
/* The Tx buffer itself. This is used to hold the text generated by the | |
execution of command line commands, and (hopefully) the execution of | |
server side include callbacks. It is a shared buffer so protected by the | |
xTxBufferMutex mutex. pcLwipAppsBlockingGetTxBuffer() and | |
vLwipAppsReleaseTxBuffer() are provided to obtain and release the | |
xTxBufferMutex respectively. pcLwipAppsBlockingGetTxBuffer() must be used with | |
caution as it has the potential to block. */ | |
static signed char cTxBuffer[ lwipappsTX_BUFFER_SIZE ]; | |
/*-----------------------------------------------------------*/ | |
/* Called from the TCP/IP thread. */ | |
void lwIPAppsInit( void *pvArgument ) | |
{ | |
ip_addr_t xIPAddr, xNetMask, xGateway; | |
extern err_t ethernetif_init( struct netif *xNetIf ); | |
static struct netif xNetIf; | |
( void ) pvArgument; | |
/* Set up the network interface. */ | |
ip_addr_set_zero( &xGateway ); | |
ip_addr_set_zero( &xIPAddr ); | |
ip_addr_set_zero( &xNetMask ); | |
LWIP_PORT_INIT_GW(&xGateway); | |
LWIP_PORT_INIT_IPADDR(&xIPAddr); | |
LWIP_PORT_INIT_NETMASK(&xNetMask); | |
printf("Starting lwIP, local interface IP is %s\n", ip_ntoa(&xIPAddr)); | |
netif_set_default( netif_add( &xNetIf, &xIPAddr, &xNetMask, &xGateway, NULL, ethernetif_init, tcpip_input ) ); | |
netif_set_up( &xNetIf ); | |
/* Install the server side include handler. */ | |
http_set_ssi_handler( uslwIPAppsSSIHandler, pccSSITags, sizeof( pccSSITags ) / sizeof( char * ) ); | |
/* Create the mutex used to ensure mutual exclusive access to the Tx | |
buffer. */ | |
xTxBufferMutex = xSemaphoreCreateMutex(); | |
configASSERT( xTxBufferMutex ); | |
/* Create the httpd server from the standard lwIP code. This demonstrates | |
use of the lwIP raw API. */ | |
httpd_init(); | |
/* Create the FreeRTOS defined basic command server. This demonstrates use | |
of the lwIP sockets API. */ | |
xTaskCreate( vBasicSocketsCommandInterpreterTask, "CmdInt", configMINIMAL_STACK_SIZE * 10, NULL, configMAX_PRIORITIES - 2, NULL ); | |
} | |
/*-----------------------------------------------------------*/ | |
static unsigned short uslwIPAppsSSIHandler( int iIndex, char *pcBuffer, int iBufferLength ) | |
{ | |
static unsigned int uiUpdateCount = 0; | |
static char cUpdateString[ 200 ]; | |
extern char *pcMainGetTaskStatusMessage( void ); | |
/* Unused parameter. */ | |
( void ) iBufferLength; | |
/* The SSI handler function that generates text depending on the index of | |
the SSI tag encountered. */ | |
switch( iIndex ) | |
{ | |
case ssiTASK_STATS_INDEX : | |
vTaskList( pcBuffer ); | |
break; | |
case ssiRUN_TIME_STATS_INDEX : | |
vTaskGetRunTimeStats( pcBuffer ); | |
break; | |
} | |
/* Include a count of the number of times an SSI function has been executed | |
in the returned string. */ | |
uiUpdateCount++; | |
sprintf( cUpdateString, "\r\n\r\n%u\r\nStatus - %s", uiUpdateCount, pcMainGetTaskStatusMessage() ); | |
strcat( pcBuffer, cUpdateString ); | |
return strlen( pcBuffer ); | |
} | |
/*-----------------------------------------------------------*/ | |
signed char *pcLwipAppsBlockingGetTxBuffer( void ) | |
{ | |
signed char *pcReturn; | |
/* Attempt to obtain the semaphore that guards the Tx buffer. */ | |
if( xSemaphoreTakeRecursive( xTxBufferMutex, lwipappsMAX_TIME_TO_WAIT_FOR_TX_BUFFER_MS ) == pdFAIL ) | |
{ | |
/* The semaphore could not be obtained before timing out. */ | |
pcReturn = NULL; | |
} | |
else | |
{ | |
/* The semaphore was obtained successfully. Return a pointer to the | |
Tx buffer. */ | |
pcReturn = cTxBuffer; | |
} | |
return pcReturn; | |
} | |
/*-----------------------------------------------------------*/ | |
void vLwipAppsReleaseTxBuffer( void ) | |
{ | |
/* Finished with the Tx buffer. Return the mutex. */ | |
xSemaphoreGiveRecursive( xTxBufferMutex ); | |
} | |